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Method for preparing copper-indium-gallium-selenide photoelectric thin film from copper nitrate and gallium chloride

A copper indium gallium selenide, photoelectric thin film technology, applied in photovoltaic power generation, circuits, electrical components and other directions, can solve the problems of high preparation cost, complex process route, low cost, etc., and achieves low production cost, low equipment requirements, and low cost low effect

Inactive Publication Date: 2016-09-07
SHANDONG JIANZHU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the low cost of raw materials and the fact that its band gap can change with the content of gallium, thereby improving the photoelectric conversion efficiency, it is a very promising solar cell material, but the existing process route is complicated and the preparation cost is high. , so it is also necessary to explore a low-cost preparation process

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] a. Cleaning of the glass substrate: clean the glass substrate as described above, and the size of the substrate is 20mm×20mm.

[0037] b. Put 1.5 parts of copper nitrate, 1.0 parts of indium chloride, 1.0 parts of gallium chloride and 2.0 parts of selenium dioxide into 378.07 parts of deionized water and mix evenly, and use ultrasonic vibration for more than 30 minutes to make the substances in the solution evenly mixed.

[0038] c. Drop the above solution onto the glass substrate placed on the homogenizer, then start the homogenizer, rotate the homogenizer at 300 rpm for 5 seconds, and rotate at 3000 rpm for 15 seconds, so that the dripped solution is coated After uniformity, the substrate was dried at 100°C, and then the above-mentioned solution was dripped and spin-coated again, and then dried again. This was repeated 10 times, and a precursor thin film sample with a certain thickness was obtained on the glass substrate.

[0039] d. Put the precursor thin film sample...

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PUM

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Abstract

The invention discloses a method for preparing a copper-indium-gallium-selenide photoelectric thin film from copper nitrate and gallium chloride, and belongs to the technical field of photoelectric thin film preparation for the solar cell. The method comprises the following steps of firstly cleaning a glass substrate; then putting copper nitrate, indium chloride, gallium chloride and selenium dioxide into a solvent, adjusting the pH value to be 4.0-7.0, and obtaining a precursor thin film on the glass substrate through a spin coating method; drying the precursor thin film, and putting the thin film into a closed container with hydrazine hydrate to enable the precursor thin film not to be in contact with the hydrazine; putting the closed container loaded with a sample into a drying oven, carrying out heating and thermal insulating processing on the container, and finally taking out the sample and drying the sample to obtain the copper-indium-gallium-selenide photoelectric thin film. According to the method, high-temperature and high-vacuum conditions are not required, the requirement on the instrument equipment is low, the production cost is low, the production efficiency is high, and the operation is easy; the obtained copper-indium-gallium-selenide photoelectric thin film is relatively high in continuity and uniformity; the main phase is the copper-indium-gallium-selenide phase; by adoption of the new process, the components and structure of the target product can be controlled easily; and therefore, a production method with low cost and implementation of industrialization is provided for preparing the high-performance copper-indium-gallium-selenide photoelectric thin film.

Description

technical field [0001] The invention belongs to the technical field of photoelectric film preparation for solar cells, and in particular relates to a method for preparing a copper indium gallium selenium photoelectric film from copper nitrate and gallium chloride. Background technique [0002] Since the beginning of the 21st century, energy and environmental issues have become a hot spot that people pay more attention to. Facing energy depletion and environmental pollution caused by traditional energy sources, people began to gradually look for new energy sources that can replace traditional fossil energy sources. A new round of energy revolution is slowly pulling Prologue. Photovoltaic power generation has the advantages of safety and reliability, no noise, no pollution, less constraints, low failure rate, and easy maintenance. Solar energy, a clean, safe and environmentally friendly renewable energy, can be used. Therefore, the research and development of solar cells in re...

Claims

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Application Information

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IPC IPC(8): H01L31/18H01L31/0304
CPCH01L31/03046H01L31/18Y02E10/544Y02P70/50
Inventor 刘科高徐勇李静吴海洋石磊
Owner SHANDONG JIANZHU UNIV